The last one, click the File button to “Add File to Library…”. Second is right clicking “Copy” of your converted MP4 files in your computer, then, click the Edit button to “Paste” your files. The first is dragging the files from your computer directly to iTunes. You have three ways to put your music or movies in iTunes for playing on iPad 2. After finishing the process, connect iPad 2 to your computer, you will have a boundary like the following picture.
if there is some thing wrong with the install process, delete the iTunes you have downloaded, and re free download the other iTunes up to 10.2 for windows. After free download the iTunes, install and run it in your computer.